Finding the Fourth Proportional to 772,503,428.88, 1,066,082,765.64 and 442,542,340.80
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Solution
The fourth proportional to 772,503,428.88, 1,066,082,765.64 and 442,542,340.80 is: 610,724,489.96
Step by Step Solution
- Step 1: Write the proportion equation
772,503,428.88 : 1,066,082,765.64 = 442,542,340.80 : x - Step 2: Convert to fraction form
772,503,428.88/1,066,082,765.64 = 442,542,340.80/x - Step 3: Cross multiply
772,503,428.88x = 1,066,082,765.64 × 442,542,340.80 - Step 4: Simplify right side
772,503,428.88x = 471,786,762,592,863,424 - Step 5: Solve for x
x = 471,786,762,592,863,424/772,503,428.88 - Step 6: Final answer
x = 610,724,489.96
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.